What does the company do well? Serpstat have a great database, and great customer service - its a tool that understands it's place within a suite and professional setting and doesn't attempt to be a "one tool to rule them all", meaning you're not paying for substandard features like with SEMrush.
What does the company not do well? The interface is very loaded with commands and the UI could be a lot more user friendly - so the tutorials etc come in handy. That being said, it's only like this as it's packed with features.
What do you wish you had known about the company before using? Nothing really to add in here.